Microphone mounting



Dec. 20, 1927.

'H. G. KRIETEMEYER MICROPHONE MOUNTING Filed April 14, 1927 Patent Dec. .20, 1927.

HERBERT G. KBIETEMEYER, OF QUINCY, ILLINOIS.

MICROPHONE MOUNTING.

Application filed April 14, 1927. Serial No. 183,752.

This invention relates to improvements in microphone mountings.

An object of the invention resides in providing'a microphone mounting in which the microphone button and immediate supporting structure are suitably mounted to; permit free rotation for the mounting of the button in a suitable supporting structure, in order that the position of the microphone button may be 'changed from time to time to prevent the carbon granules in the button from becoming packed in the lower portion of the button and thereby rendering the efllcient operation of the same in properly transmitting sound waves in passing thereon over radio or wires.

A further object of the invention resides in providing a rotatable mounting for a microphone in order that the useful life of the microphone may be increased to asubstantial extent through permitting of the position of the buttonof the microphone, so as to prevent the carbon granules of the button from becoming compressed and packed in the side portionthereof.

The invention comprehends numerous other objects residing in the specific details of construction and arrangement of the parts which are more particularly pointed out in the following description and claim directed to a preferred form of the 1nvention, it being understood however, that various other means may be employed in tak-' ing this invention in efi'ect, which are within the scope of the invention as herein set forth.

In the drawing forming part of this invention:

Figure 1'is a front elevational view of a microphone and its mounting'construoted in accordance with this invention.

operative positlons on a plurality of radially extending coiled springs 2. These coiled springs in the present invention, have. the free ends secured to the rotatable ring memher .3 by means of the eye members 4 carried thereby, as clearly shown in Fig. 1.

This rotatable ring member is formed on its outer periphery with an annular groove 5 intermediate the side edges and the ring is received by the stationary annulus 6 in a plurality of set screws 7 therein provided with projections on the inner end portions adapted to seat and ride in the groove 5. These set screws 7 serve to retain the rotatable ring member 3 in assembled rotatable relation in the stationary annulus 6.

This annulus. is supported on a suitable terminal member 8 having a central opening 9 and a threaded portion 10 adapted for threaded cooperation with a tubular stand 11 of any suitable and desired type as well known in the art. The electrical conductors for the microphone 1 are indicated at 12 housed in a suitable casing or conduit, and extend through the opening 9 to the stand 11 as illustrated in Fig. 1.

"l/Vith this construction as 'above described,

it will be seen that when the carbon granulesin the microphone 1 tend to settle in the bottom portion of the button and become packed therein which interferes with the eflicient operation of the button in controlling an electrical circuit, that the position of the button may be readily changed by rotating the ring 3 within the stationary annulus-6, and thereby reposition the button 1 without afiecting the electrical connections between the parts or other parts of the construction, so that the carbon granules will be removed from their packed relation to the opposite side of the button by the action of gravity to the position to which the button has been rotated.

By frequently changing the position of the ring 3 in the annulus 6, it will be seen that the carbon granules in the microphone button can be continually changed in their positions in order to keep them in the loose form highly desirable for the eflicient operation of the button.

Having thus described my invention, what I claim as new is A microphone mounting comprising a pair of relatively rotatable concentrically arranged ring members'constituting an inner and outer ring, one of said rings having an annular groove and the other ring having adjustable screwsv slidably arranged in said groove, said inner ring yieldably supporting a microphone button and said outer ring having a supporting stand connected therewith. In testimon whereof I aifix my signature.

HERBl ERT G. KRIETEMEYER. 

